The Scottish Environment Protection Agency is moving to the Maxim office park.

The 60,000 square feet letting is the largest so far at the Lanarkshire site.

Although the lease is for 20 years neither side would reveal the financial terms or the incentives given.

Maxim Office Park was represented by CB Richard Ellis and Ryden with Cushman and Wakefield acting for SEPA

SEPA is expected to move around 350 staff from offices in East Kilbride, Edinburgh, Stirling and Perth with most in place by 2013.

David Gebbie, partner at Arisaig Property Partners, which manages the park, said: "We are obviously excited to welcome SEPA to Maxim Office Park, especially as it was the recent financial restructuring of Maxim that has allowed both parties to achieve a leasing deal that previously couldn't have been achieved. "Both Maxim and SEPA have economically benefitted from a review of the original terms without impacting the actual net present value of the lease.

"The news is a great boost for Maxim and the Lanarkshire area."

Earlier this year private equity firm Cerberus bought Maxim's £95 million debt from Lloyds Banking Group at a major discount.The 750,000 square feet of buildings at Maxim were constructed to take advantage of enterprise zone tax breaks.